Can this be made DRY? lookup_expr w/ method

[Rich Rauenzahn]

It seems like I should be able to have just bar_id and have it automatically pass the lookup_expr down to a single method?  But I don't see this as a possibility.

class FooFilter(filters.FilterSet):

    bar_id = filters.CharFilter(method="filter_bar_id")

    bar_id__in = filters.CharFilter(method="filter_bar_id__in")

    # maybe some others later...

    def filter_bar_id(self, queryset, name, value):

        return queryset.filter(

            Q(blah__bar=value) | Q(blech__bar=value)

        )

    def filter_bar_id__in(self, queryset, name, value):

        bars = value.split(",")

        return queryset.filter(

            Q(blah__bar__in=bars) | Q(blech__bar__in=bars)

        )